https://www.android.com/choicescreen/

Not quite sure whether this will apply to the UK

Seems odd to me that a device developed by Google would auction off the default to the competition.  I don't get how this model will even come close to rivaling ad revenue.

Search Engine Ecosia's response to Google auctioning off search engine choices in Android Setup:
https://blog.ecosia.org/google-android-choice-screen-auction-eu-ecosia/

>I don't get how this model will even come close to rivaling ad revenue.

Methinks G is betting that the user will eventually abandon the new default selection and return to the Borg.